This question is similar to Is there any way to save the develop settings of a virtual copy in Lightroom?, but tackles an adjacent problem. When handling multiple virtual copies of a DNG file the different settings of the copies that are stacked together seem to be saved in the catalog and in the catalog alone. As far as I can tell the virtual copies are not saved to the DNG even if a "save to file" operation is performed on the copies.
Is it possible to save multiple Lightroom virtual copies (the whole stack) in a single DNG file? I'd like to be able to import just the DNG into other Lightroom installations and having all of the virtual copies of a DNG to show up in the catalog where the DNG was imported to. As of now it seems like only the master edit is transferred with the DNG itself and the rest of the edits only exist as settings in the catalog they where created in.